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Finding the Fourth Proportional to 529,636.68, 730,903.38 and 287,919.72

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Solution

The fourth proportional to 529,636.68, 730,903.38 and 287,919.72 is: 397,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,636.68 : 730,903.38 = 287,919.72 : x
  2. Step 2: Convert to fraction form
    529,636.68/730,903.38 = 287,919.72/x
  3. Step 3: Cross multiply
    529,636.68x = 730,903.38 × 287,919.72
  4. Step 4: Simplify right side
    529,636.68x = 210,441,496,516.65
  5. Step 5: Solve for x
    x = 210,441,496,516.65/529,636.68
  6. Step 6: Final answer
    x = 397,331.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.